Which of the following statements is not correct? a. Market power can cause markets to be inefficient. b. The invisible hand can remedy all types of market failures. c. Externalities can cause markets to be inefficient. d. An invisible hand leads buyers and sellers to an equilibrium that maximizes total surplus.

Brian has just finished college. he wants to set up a small business to make and sell fireworks. he registers his company and acquires a license from the government. he finds that most of his competitors are selling fireworks at an extremely low price. he would like to make more money, so he decides to innovate and develop better fireworks. he sells his fireworks at a higher price, and they are a huge hit with the customers. after a few years, he earns enough profit to set up a bigger fireworks factory that complies with the government’s health and safety regulations. he even starts exporting fireworks overseas. which type of economy does this scenario describe?